Bell & Gossett P2001489 Integrated Technologic with Sensorless Control - Manual (Page 50)

Warning/Alarm Description Cause Remedy
46 — Power card supply The supply on the power
card is out of range.
There are three power
supplies generated by the
switch mode power supply
(SMPS) on the power card:
24 V, 5 V, +/- 18 V. When
powered with 24 VDC with
the MCB 107 option, only
the 24 V and 5 V supplies
are monitored. When
powered with three-phase
mains voltage, all three
supplied are monitored.
Check for a defective power
cord.
Check for a defective control
card.
Check for a defective option
card.
If a 24 VDC power supply is
used, verify proper supply
power.
47 — 24 V supply low The 24 V DC is measured on
the control card.
The external 24 V DC
backup power supply may
be overloaded.
Contact your Xylem
supplier.
48 — 1.8 V supply low The power supply is
measured on the control
card.
The 1.8 V DC supply used
on the control card is
outside of allowable limits.
Check for a defective control
card.
If an option card is present,
check for an overvoltage
condition.
49 — Speed limit When the speed is not
within the specified range
in 4–11 Motor Speed Low
Limit [RPM] and 4–13
Motor Speed High Limit
[RPM], the frequency
converter will show a
warning.
When the speed is below
the specified limit in 1–86
Trip Speed Low [RPM]
(except when starting or
stopping) the frequency
converter will trip.
50 — AMA calibration failed Contact your Xylem supplier
or Xylem Service
Department.
51 — AMA check Unom and
Inom
The settings for motor
voltage, motor current, and
motor power are wrong.
Check the settings in
parameters 1–20 to 1–25.
52 — AMA low Inom The motor current is too
low.
Check the setting in 4–18
Current Limit.
53 — AMA motor too big The motor is too big for the
AMA to operate.
54 — AMA motor too small The motor is too small for
the AMA to operate.
55 — AMA Parameter out of
range
The parameter values of the
motor are outside of the
acceptable range. AMA will
not run.
56 — AMA interrupted by
the user
The AMA has been
interrupted by the user.
57 — AMA timeout Try to restart AMA again.
Repeated restarts may
overheat the motor.
58 — AMA internal fault Contact your Xylem
supplier.
Troubleshooting
48 Integrated Technologic ® with Sensorless Control INSTRUCTION MANUAL